Speed-governor



(No Model.)

J. G. HENRY.

SPEED GUVERNOE.

Patented Jan. 9, 1883'.

Unrrnn STATi-s PATENT Ormea..

JOHN O. HENRY, OFI KANSAS CITY, MISSOURI, ASSIGNOR OF ONE-HALF TO L.TOWNE AND P, F. CLINTON,

OF LAINRENOE, KANSAS.

OF' SAME PLAGE, AND J. L. BARNES,

SPEED-GOVERNOR.

SPECIFICATION forming part of Letters Application filed May 4, 1882. (Nomodel.)

T all whom Iit may concern:

Be it known that I, JOHN O. HENRY, a citizen ofthe United States,residing at Kansas City, in the county of Jackson and Staterof Missouri,have invented certain new and useful Improvements in Speed Governors, ofwhich the following is a specification.

Myinveniion has for its object the provision ofa governor or regulator,which, while i0 of great strength and very simple, is at the same timevery delicate in operation, responding to the slight increment in thespeed of rotation of the governor-shaft, and yet not affected byanysudden jarring of the engine or other motor to which it may beapplied. To

this end I constructthe governor orregulator somewhat on the principleof the Silver governor-that is to say, I cast the governorshaft with alongitudinal slot in which I hang zo a governor-arm. This arm is sobalanced that its ends will be thrown away from the shaft when thesameis revolved, suitable springs being provided for its retraction onthe cessation of the motion of the shaft.

In governors of this character as formerly constructed there hasgenerally been provided a single spring, which was so arranged that,

i while acting to retract thegovernor-arm, it

bore heavily upon the stationary part or frame 3o ofthe instrument, theeffect being to produce a heavy bearing and great friction between theend of the governor-shaft and its journal.

This friction, varying with the speed at which the governor-shaft isrotated, must necessarily be very great when the said shaft is rotatedat a high rate of speed, even though the governor itself be very light.This heavy friction necessarily quickly wears away the brass orotherjournal of theshaft, changing its position therein, and renderingits work entirely unreliable and unfit for use where accuracy isrequired. llo avoid this difficulty I place a spring or springs used forthis purpose between the governorarm and shaft, in the manner presentlytobe described, so as to bring their full bearing upon the slow-movingpivots or trunnions of the governor-arm, instead of upon theswift-movingjournals ofthe governor-shaft. I further provide this springor 5o springs and other parts of the governor with neans ofdelicateadjustment for insuring their accurate working, in a manner to behereinafter more fully set forth.

In the accompanying drawings, Figure l is a side elevation ofmy governorin its preferred form. Fig. 2 is a plan of the same. Fig. 3 is a sideelevation ofa modification thereof'. Fig. 4 is a plan of the same.

In the drawings, A represents a rotary governor-shaft, preferablysupported by trunnionsockets in the ends of the governor-shaft, andwhich are supported in standards or brackets O, so as to be adjustabletherein for the purpose of taking up the wear in the bearings.

D is a pulley-wheel for imparting motion to the governor-shaft, and maybe keyed or otherwise fixed thereon.

rIhe shaft A is cast with a slot, E, in one portion'thereof. In the slotis hung the governor-arm F, cast in one with trunnionsff, by means ofwhich the said arm is supported through the medium of trunnion-pins G,adjustablein shaft A, and having nuts g for xing them in any desiredposition thereon. By means of these adjustable trunnion-pins any wearmay be taken up in the bearing of`the trun'nions ff, and thegovernor-arm accurately set to an exactly axial position on the rotaryshaft. The ends ofthe governor-arm F are screw-threaded, as shown inFig. l, for the reception and adjustment thereon of suitable weights orballs, H. 4Nuts li serve to fix the weights H to any position on the armF at which they may be set. It will be seen that one or both of theballs H may be moved inward or outward on the governor-arm, so as toexactly equalize their eli'ect, and consequently balance the momentumofthe two ends of the governor-arm when in action. By this means aperfectly equable motion is secured for the governor-arm, and the weightbeinga equally balanced on both sides of its fulcraf, the governor isnot liable to be rendered spasmodic and irregular in its action by thejarring or uneven motion of the motor 'to which the governor may beattached.

To forcibly retract the governor-arm I provide a spring, I, bolted atone end, t', to the governor-arm, and at the other end being propins BB, whose conicalends bear in conical IOD vided with a screw-threadedtongue, i', which nien-pins, as before described. I have here alsopasses through an eye in an abutment, J, in which it is held by athumb-nut, K. The abutment or abutments J are slotted, as shown at j inFig. 2, through which slots bolts L pass to secure the abutments to thegovernor-shafts. The end c' of the spring I is also slotted, as shown,for the reception of a bolt, m, which secures this end of the spring tothe arm F; It will thus be seen that three methods of adjustment, bothas to strength, tension, and position ofthe spring I, are provided. Thusthe abutment J may be moved outward or inward along the shaft A, thethumb-nut K may be tightened or loosened on the tongue i', and the otherend, i?, may be moved outward or inward on the arm F to increase orlessen its effective force thereon.

1f desired, a further means of adjustment may be provided by making theinner end of the tongue i' with an eye for the reception of the end ofthe spring, more or less ot' which may be passed throughthe said eye,accordingly as it is desired to change the quality of said spring.

I have above described a single spring as applied to the governor; butit is obviously preferable to use and I have here shown two springs soapplied.

Ihe arrangement above described, besides possessing the advantage beforeset forth of bringing the heavy bearing of the springs upon theslow-moving fulera of the governorarm instead of upon the swift-movingjournals of the rotary shaft, allows of the use for this purpose ofspiral springs, which are preferable on account ot' their delicacy andevenness of action to at and other springs commonly employed.

An arm, j", projecting from the governor-arm F and east in onetherewith, bears at its end a connecting-rod, N, employed to transmitthe motion of the governor or regulator to the throttle-valve of anengine, or, as I have described in an application of even date herewith,to a pen for the purpose ofrecording the speed and distance traveled ofa locomotive or other object to which this instrument may be applied.

In Figs. 3 and 4 I have illustrated a modification ofthe governor,showing the ends of the governor-shaft having bearing in journalboxes incustomary manner, instead ofon trunshown a method in which a fiatspring,(), may be substituted for the spiral springs I. The said springO is fixed to a bracket, I), on shaft A, and has at its outer end an eyefor the reception of a screw-threaded rod, Q. whose other end is hingedto the arm F. A thumbnut, It, on the rod Q permits the increasing ordiminishing of the tension of the spring 0.

Having thus described my invention, the followingis what I claim as newtherein and desire to secure by Letters Patent- 1. A governor orregulator consisting of rigid arm F, pivotal about au axis transverse tothe governor-shaft, and a spring or springs the ends of which areattached to the said arm and shaft, respectively, said spring or springsbeing so arranged as to bear upon the slowlymoving pivot of thegovernor-arm, substantially as and for the purpose set forth.

2. The combination ofslotted shaftA, weighted governor-arm F, fulcrumedtherein, and springs I I, having their ends attached respectively to thegovernor-arm and to the rotary shaft, substantially as and for thepurpose set forth.

3. In combination with rotary shaft A and governor-arm F, pivoted tosaid shaft on an axis transverse thereto, spring or springs l, fixedbetween the said shaft and arm,and having devices for regulating theirtension or length, as set forth.

4. In combination with the rotary governorshaft, the rigid governor-arm,a spring or springs arranged between said shaft and arm', and means forpermitting the adjustment of said spring or springs outward or inward ousaid arm, substantially as set forth.

5.. In combination with governor-arm Fand shaft A, the springs I I,adjustable as to strength, position, and tension on arm F and shaft A,as set forth.

(i. The combination of slotted shaft A, governor-arm F, hung onadjustable trunnion-plns G, and carrying balls or weights H, capable ofradial adjustment', abutment or abutments J, adjustable on shaft A, andspring or springs I, capable of adjustment at each end, as setforth.

JOHN C. HENRY.

XVitnesses:

H. E. KNIGHT, L. M. HOPKINS.

